Use of library step stools

Do you have any storage room? or even just high location shelf? if you do, I think you must have this library step stools, though this tool was usually used to the library becuase on the pace it is really needed this to get the books that you wanted even if they were on the high corner, Yeah! we all know on what is the use of this tool, however, quite sometimes we forgotten to use this into simply things like getting your old stuff on your storage room and such. Believe me, this indeed useful.